dlm: don't print common non-errors

Change log_error() to log_debug() for conditions that can occur in
large number in normal operation.

Signed-off-by: David Teigland <teigland@redhat.com>
diff --git a/fs/dlm/lock.c b/fs/dlm/lock.c
index 7bc6ad9..63fe74d 100644
--- a/fs/dlm/lock.c
+++ b/fs/dlm/lock.c
@@ -4258,7 +4258,7 @@
 	put_rsb(r);
  out:
 	if (error)
-		log_print("recover_master_copy %d %x", error, rl->rl_lkid);
+		log_debug(ls, "recover_master_copy %d %x", error, rl->rl_lkid);
 	rl->rl_result = error;
 	return error;
 }